Butterfly pea (Clitoria ternatea)

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Butterfly pea (Clitoria ternatea)

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Common names

Butterfly pea, blue pea, kordofan pea, cordofan pea, Asian pigeonwings [English]; pois bleu [French]; clitoria azul, azulejo, papito, zapatico de la reina, zapotillo, conchita azul, campanilla, bandera, choroque, lupita, pito de parra, bejuco de conchitas [Spanish]; cunhã, Fula criqua [Portuguese]; kittelbloem [Dutch]; Blaue Klitorie [German]; tembang telang [Indonesian]; Bunga telang [Malay]; Mavi Kelebek Sarmaşığı [Turkish]; Chi Đậu biếc [Vietnamese]; [Bengali]; 蝶豆 [Chinese];

[Hindi]; [Malayalam]; [Marathi]; [Tamul]; [Telugu];

ดอกอัญชัน [Thai]

Species

Clitoria ternatea L. [Fabaceae]

Synonyms

Clitoria albiflora Mattei; Clitoria bracteata Poir.; Clitoria mearnsii De Wild.; Clitoria tanganicensis Micheli; Clitoria zanzibarensis Vatke

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Description

The butterfly pea (Clitoria ternatea L.) is a vigorous, trailing, scrambling or climbing tropical legume. Its sparsely pubescent stems are sub-erect and woody at the base and may be up to 5 m long. They root only at the tips (Cook et al., 2005; Staples, 1992). The leaves are pinnate, bearing 5-7 elliptical, 3-5 cm long leaflets. The flowers are solitary or paired, deep blue or pure white, about 4 cm broad. The fruits are flat, linear, sparsely pubescent pods that dehisce violently at maturity and throw 8-10 dark and shiny seeds (FAO, 2012; Cook et al., 2005; Staples, 1992). There are numerous ecotypes, agro-types and cultivars that differ in flowers and leaflets (FAO, 2012; Staples, 1992). Many cultivars have been bred in Latin America, notably in Cuba and Mexico (Cook et al., 2005; Villanueva Avalos et al., 2004; Gomez et al., 2003).

Clitoria ternatea is a high-quality, protein-rich legume, a "tropical alfalfa" often referred to as a protein bank that can be grown at low cost (Cook et al., 2005). Livestock tend to prefer it over other legumes and grasses and it is therefore much valued as a pasture legume. It is also used for cut-and-carry feeding systems and cut for hay and silage (Gomez et al., 2003). An N-fixing legume, Clitoria ternatea is used as a ley legume or as green manure. It is a valuable cover crop in rubber and coconut plantations. The young pods are edible and used as vegetables in the Philippines (Staples, 1992). Butterfly pea is used in fences and in trellises as an ornamental for its showy flowers, valuable for dyeing and in ethno-medicine (Cook et al., 2005). All parts of Clitoria ternatea contain peptides called cliotides that have potent anti-microbial properties against Escherichia coli (Nguyen Giang Kien Truc et al., 2011).

Distribution

Clitoria ternatea may have originated from Latin America or Asia but is now naturalized in all the semi-arid and sub-humid tropics of Asia, Africa and Australia (Staples, 1992). A fast summer-growing legume, it can cover the soil within no more than 30-40 days after sowing and yield mature pods within 110 to 150 days. It is naturally found in grassland, open woodland, bush, riverine vegetation, and disturbed places.

Clitoria ternatea grows within 20°N and 24°S, from sea level up to an altitude of 1600-1800 m, and in equatorial Africa up to 2000 m (FAO, 2012; Ecocrop, 2012; Cook et al., 2005; Staples, 1992). Butterfly pea does better where average temperature is about 19-28°C and where annual rainfall ranges from 700 to 1500 mm. However, it tolerates temperatures as low as 15°C and even some frost as it may regrow from the stems or from the plant base, provided it is already woody when the frosting occurs. It does well under irrigation but has only a low tolerance of flooding or waterlogging. It has also some drought tolerance and can grow in places where rainfall is as low as 400-500 mm. It can survive a 5-6 month drought in the drier tropics. Clitoria ternatea can grow on a wide range of soils but is particularly adapted to shallow, heavy clay and sodic soils (pH 5.5-8.9). It thrives in full sunlight but can also grow under light shade in rubber and coconut plantations (FAO, 2012; Ecocrop, 2012; Cook et al., 2005; Staples, 1992).

Forage management

Clitoria ternatea can be sown in pure stands (generally as a short-term rotation with crops) or in association with tall and Description Nutritional aspects Nutritional tables References

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Heuzé V., Tran G., Boval M., Bastianelli D., Lebas F., 2016. Butterfly pea (Clitoria ternatea). Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. http://www.feedipedia.org/node/318 Last updated on April 5, 2016, 15:18

English correction by Tim Smith (Animal Science consultant) and Hélène Thiollet (AFZ)

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Forest and Kim Starr Forest and Kim Starr Forest and Kim Starr

tussock grasses for permanent pasture. When sown for pasture, it does well with elephant grass (Pennisetum purpureum), forage sorghums (Sorghum bicolor), millet species, Guinea grass (Megathyrsus maximus), pangola grass (Digitaria eriantha), gamba grass (Andropogon gayanus) or Dichanthium aristatum. When it is over-sown in permanent pasture or sown in mixture with fast growing grasses, its establishment may be more difficult (Cook et al., 2005, Staples, 1992). In places where it is intended for revegetation, it can be sown with buffel grass (Cenchrus ciliaris) and Rhodes grass (Chloris gayana) (Cook et al., 2005).

In Australia, Clitoria ternatea is particularly valuable as protein-rich forage in very heavy and shallow soils where leucaena (Leucaena leucocephala) cannot grow (Cook et al., 2005). Compared to leucaena, it has a shorter time to first grazing, lower establishment costs, and is much easier to remove, being an herbaceous legume (Conway et al., 2001). Once established, Clitoria ternatea quickly covers the soil and can be directly harvested by grazing or as cut-and-carry forage. It should not be cut too low and too often. It is sensitive to trampling that may hamper regrowth from the tips and cattle should not enter the stand more than 2-3 hours/day. Only light grazing should be allowed during the establishment year so that the plants can set seed for stand regeneration and develop a strong frame that can withstand grazing. Heavy grazing is then possible provided it is done rotationally (Cook et al., 2005).

Forage DM may range from 0.2 to 16 t/ha/year depending on growing conditions. In dry Australian conditions, the cultivar Milgarra yielded 2 to 6 t DM/ha/year. Under irrigation, yields up to 30 t DM/ha could be achieved (Cook et al., 2005; Bustamante Guerrero et al., 2002; Staples, 1992).

Environmental impact

Soil improver and cover crop

Clitoria ternatea is an N-fixing legume and can be used as a ley legume and as green manure. It is also useful in revegetation of coal mining sites in central Queensland (Australia) (FAO, 2012; Cook et al., 2005).

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Nutritional attributes

Forage

Clitoria ternatea is a forage of a consistently high nutritional value. Its crude protein content is comparable to that of alfalfa with values for the fresh forage typically higher than 18% DM. Forage quality persists even when maturity is advanced, without affecting digestibility or feed intake (Barro et al., 1983). For instance, protein content in Clitoria ternatea hay varied from 23% DM in the vegetative state (42 days regrowth) to 19% DM at seeding (82 days). During the same period, ADF increased from 38 to 47% DM. The lignin content appears to be quite high, usually about 10% DM and higher than 15% DM in some cases. Unlike other legumes, Clitoria ternatea seems to be relatively free of toxic compounds and can be fed to ruminants and monogastric species (Cordoba et al., 1993), though its relatively high fibre content may be limiting for pigs and poultry. It is also very palatable (Cook et al., 2005).

Seeds

Clitoria ternatea seeds are protein-rich (about 38-43% DM) (Bravo, 1971b; Odeyinka et al., 2004; Schlink et al., 1993). However, little is known about their actual nutritional value and their high condensed tannins content and other antinutritional factors may make them unsuitable for animal feeding (Bravo, 1971a; Villanueva Avalos et al., 2004).

Potential constraints

Forage

Neither bloat nor toxicity have been reported (Cook et al., 2005; Villanueva Avalos et al., 2004).

Seeds

The seeds are a strong purgative (Cook et al., 2005). They contain condensed tannins and trypsin inhibitors (Bravo, 1971b; Macedo et al., 1992).

Ruminants

Clitoria ternatea is a good protein-rich forage that is used either alone or as a protein supplement for grazing animals. Productive behavior of animals fed with Clitoria ternatea is quite acceptable and compares favourably to that obtained with other high quality supplements and forages, and it often contributes significantly to lower production costs (Villanueva Avalos et al., 2004).

Palatability and digestibility

Clitoria ternatea forage is palatable to sheep, goats and cattle (Chakravarty, 1970) and no toxicity has been observed (Hall, 1985). There are few digestibility measurements available in the literature: in vivo OM and DM digestibility values for the hay range from 50-60% (Ratan et al., 1982; Upadhyaya et al., 1983) to 72-74% (Medrano, 2001; Bustamante Guerrero et al., 2002), which reflects probably the high fibre content of the forage.

Dairy cows

Numerous studies have shown that it is possible to substitute grains, by-products and alfalfa hay with Clitoria ternatea hay in a supplementary feed for dairy cows at different stages of lactation, without a visible downturn in milk production, and at the same time reducing feed costs (Villanueva Avalos et al., 2004). The following table presents various situations where supplementation with Clitoria ternatea hay or the use of mixed grass-Clitoria pasture was beneficial to dairy performance or to dairy income.

Table 1. Examples of utilization of Clitoria ternatea in dairy cattle (DMI: dry matter intake; ADG: average daily gain)

Country Animal Diet Results Reference

Mexico Brown Swiss cows

Pasture + concentrate (27-100% Clitoria hay)

DMI and milk production maximum at 100% Clitoria hay; 60% reduction in concentrate use

Bustamante Guerrero et al., 2002

Mexico Holstein cows

Cynodon nlemfuensis pasture + 50-75% Clitoria (DM basis)

Higher DMI, milk production and ADG at 75% inclusion Arcos, 1987

Mexico Holstein-Zebu cows

Pasture + 2 kg/d DM Clitoria +50% milk production compared to cows grazing grass only Sosa, 1990

Mexico Brown Swiss cows

Pasture + concentrate (0-100% Clitoria hay) Lower production costs at 25-50% inclusion rate compared to 0% or to concentrate + alfalfa hay

Villanueva Avalos et al., 1996

Kenya Jersey cows

Pennisetum purpureum + Clitoria, Gliricidia sepium or Mucuna pruriens

Similar DM intake, DM digestibility and lactation performance for all legumes

Juma et al., 2006

Beef and growing cattle

The following table presents various situations where supplementation with Clitoria ternatea hay or the use of Clitoria pasture (alone or in association) was beneficial to growth performance.

Table 2. Examples of utilization of Clitoria ternatea in beef and growing cattle (DMI: dry matter intake; ADG: average daily gain)

Description Nutritional aspects Nutritional tables References

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Cuba Heifers Pasture + legume mixture including Clitoria Pasture alone

ADG 452 g/d ADG 336 g/d

Mejias et al., 2005

Australia Beef cattle Grass-legume (Clitoria or Stylosanthes

seabrana) pasture

Grass pasture alone

Higher gain (+64-142 kg in 12 months) on the grass-legume pasture

Hill et al., 2009

Mexico Heifers Clitoria pasture

Digitaria eriantha, with or without Macroptilium atropurpureum

ADG 402 g/d ADG 279-237 g/d

Garza et al., 1972

Mexico Heifers Clitoria pasture 180 kg/ha meat in 112 d Cordoba et al., 1993

Mexico Zebu x Brown Swiss

Digitaria eriantha + Clitoria pasture (two grazing

systems)

ADG 920-944 g/d (for 1 year) Cordova et al., 1987

Mexico Heifers Cynodon dactylon + Clitoria pasture, 4

animals/ha

Cynodon dactylon + Clitoria pasture, 12

animals/ha

ADG 774 g/d ADG 338 g/d; 57%

Production/ha was 57% higher at the highest stocking rate

Hernandez et al., 1991

Mexico Suckling calves Clitoria hay Alfalfa hay

ADG 743 g/d ADG 803 g/d

Arias, 1999

Sheep and goats

The following table presents various situations where supplementation with Clitoria ternatea hay or the use of Clitoria pasture (alone or in association) was beneficial to growth performance.

Table 3. Examples of utilization of Clitoria ternatea in sheep and goats (DMI: dry matter intake; ADG: average daily gain)

Brazil Sheep Goats

Fresh, chopped Clitoria forage, ad libitum

Sheep: DMI 79 g/kg W0.75_{; DM digestibility 53%}

Goats: DMI 68 g/kg W0.75_{; DM digestibility 54%}

Barros et al., 1991 Puerto Rico Creole rams

Guinea grass/Clitoria hay

Chloris gayana hay

DMI 919 g/d; DM dig. 65%, much higher digestible DMI DMI 669 g/d; DM digestibility 56%

Sandoval et al., 2009

Mexico Pelibuey sheep

Clitoria-based concentrate ADG 152-160 g/d, similar to that obtained with a poultry manure/rice bran concentrate but more profitable

Perez et al., 1993 Mexico Sheep, finishing Clitoria hay, 30-60% DM in the diet

ADG 12-16% higher and feed cost 22-32% lower than for an alfalfa hay/Enterolobium cyclocarpum meal supplementation

Cardenas et al., 1999

Mexico Pelibuey sheep

40% Clitoria hay alone 40% Clitoria hay with Monensin, Na and K

Males: ADG 193 g/d ; Females: ADG 109 g/d Males: ADG 221 g/d ; Females: ADG 140 g/d

Rubio et al., 1997

Pigs

While Clitoria ternatea has been described as suitable for pig feeding (Cordoba et al., 1993), little information exists concerning its utilization for pigs. Clitoria ternatea stands grazed by pigs had a higher acceptability (620 g DM/100 kg W) than stands of the tropical legumes siratro (Macroptilium atropurpureum) and centro (Centrosema pubescens) (Mora et al., 2005). Clitoria ternatea silage was found to be relatively digestible (OM digestibility 66%) and to have a metabolizable energy value (10.3 MJ/kg DM) higher than that of dehydrated alfalfa (López et al., 2001a).

Poultry

Dried leaves of Clitoria ternatea have been tested with success as a feed diluent for broilers (Marin et al., 2003). However, broiler performance was decreased when it was used as a feed ingredient as a substitute for maize (Monforte et al., 2002).

Rabbits

Clitoria ternatea is a common forage for feeding rabbits in Mozambique and Sudan (Muir et al., 1996; Elamin et al., 2011). When fed ad libitum with fresh Napier grass (Pennisetum purpureum), Clitoria forage could not support rabbit growth. However, when fed ad libitum with green sweet potato vines, Clitoria forage gave a growth rate representing 75% of that observed with growing rabbits receiving the pelleted control diet (Muir et al., 1991). When given to rabbits in addition to a pelleted diet, the voluntary forage:concentrate ratio was 17%:83 % on a DM basis and the growth rate 93% that of rabbits fed pellets only (Muir et al., 1991).

When fed ad libitum to breeding does together with other forages and wheat bran, fresh Clitoria ternatea supported better reproduction performance than fresh leucaena (24%) and wheat bran (76%) (Muir et al., 1995). When included at 15% in a growing rabbit complete diet, dried Clitoria terneata allowed a growth rate similar to that observed with the inclusion of 12% dried berseem or 15% sweet potato vine (Elamin et al., 2011). According to these results, Clitoria ternatea can be considered as suitable forage for rabbit feeding, mainly as a fibre source but also as a source of protein. Its high level of lignin could be considered as an advantage for controlling the digestive health of rabbits (Gidenne et al., 2010).

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Butterfly pea (Clitoria ternatea)

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Tables of chemical composition and nutritional value

Butterfly pea (Clitoria ternatea), aerial part, fresh Butterfly pea (Clitoria ternatea), aerial part, hay Butterfly pea (Clitoria ternatea), aerial part, silage Butterfly pea (Clitoria ternatea), seeds

Avg: average or predicted value; SD: standard deviation; Min: minimum value; Max: maximum value; Nb: number of values (samples) used

Butterfly pea (Clitoria ternatea), aerial part, fresh

Main analysis Unit Avg SD Min Max Nb

Dry matter % as fed 21.9 6.0 12.7 30.5 10

Crude protein % DM 21.3 4.3 12.8 28.7 15 Crude fibre % DM 25.6 7.9 17.3 40.1 10 NDF % DM 53.3 7.7 42.3 62.8 7 ADF % DM 37.5 6.2 31.9 47.4 5 Lignin % DM 9.1 1.0 7.9 9.8 3 Ether extract % DM 3.0 0.9 1.2 4.4 10 Ash % DM 9.9 3.4 6.6 17.8 8 Gross energy MJ/kg DM 18.6 1.3 17.1 19.6 3 *

Minerals Unit Avg SD Min Max Nb

Calcium g/kg DM 12.7 6.7 1.5 25.9 11 Phosphorus g/kg DM 2.9 1.1 0.3 3.9 9 Potassium g/kg DM 16.9 7.3 7.7 23.0 4 Sodium g/kg DM 0.7 0.3 0.3 1.1 4 Magnesium g/kg DM 4.2 1.6 3.2 6.0 3 Manganese mg/kg DM 68 35 28 91 3 Zinc mg/kg DM 33 10 25 44 3 Copper mg/kg DM 7 2 6 9 3

Amino acids Unit Avg SD Min Max Nb

Cystine % protein 2.1 1

Lysine % protein 4.4 1

Methionine % protein 1.5 1

Threonine % protein 4.4 1

Tryptophan % protein 1.7 1

Secondary metabolites Unit Avg SD Min Max Nb

Tannins (eq. tannic acid) g/kg DM 11.1 5.0 17.1 2

Ruminant nutritive values Unit Avg SD Min Max Nb

OM digestibility, Ruminant % 69.7 *

Energy digestibility, ruminants % 66.6 *

DE ruminants MJ/kg DM 12.4 *

ME ruminants MJ/kg DM 9.8 *

The asterisk * indicates that the average value was obtained by an equation.

References

Barnes, 1999; CIRAD, 1991; Heinritz et al., 2012; Juma et al., 2006; Kawas et al., 1995; López et al., 2001; Mastrapa et al., 2000; Nasrullah et al., 2003

Last updated on 24/10/2012 00:44:26

Butterfly pea (Clitoria ternatea), aerial part, hay

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Dry matter % as fed 92.1 2.6 89.0 97.6 11

Crude protein % DM 19.1 3.8 13.0 23.3 11 Crude fibre % DM 31.4 6.6 21.2 38.3 8 NDF % DM 50.6 5.2 42.4 60.2 8 ADF % DM 41.7 3.9 37.0 46.9 7 Lignin % DM 11.6 3.9 7.1 16.1 8 Ether extract % DM 3.6 0.8 2.3 4.4 8 Ash % DM 8.0 1.1 6.1 10.3 11 Gross energy MJ/kg DM 19.2 0.1 17.2 19.2 3 *

OM digestibility, Ruminant % 53.3 3.0 50.0 56.0 3

Nitrogen digestibility, ruminants % 74.0 7.1 63.8 79.8 4

Poultry nutritive values Unit Avg SD Min Max Nb

TME poultry MJ/kg DM 6.2 5.5 6.9 2

References

Barro et al., 1983; Barros et al., 1991; Barros et al., 2004; Marin et al., 2003; Medrano, 2001; Monforte et al., 2002; Ratan et al., 1982; Upadhyaya et al., 1983

Last updated on 24/10/2012 00:45:43

Butterfly pea (Clitoria ternatea), aerial part, silage

Dry matter % as fed 28.3 1

Crude protein % DM 19.6 2.2 17.6 21.9 3 Crude fibre % DM 28.5 * NDF % DM 51.5 3.8 48.9 55.9 3 ADF % DM 34.7 34.6 34.7 2 Lignin % DM 10.3 9.8 10.7 2 Ash % DM 10.0 1 Gross energy MJ/kg DM 16.5 1

OM digestibility, Ruminant % 61.1 *

DM digestibility, ruminants % 63.3 59.8 66.8 2

Pig nutritive values Unit Avg SD Min Max Nb

Energy digestibility, growing pig % 65.4 1

DE growing pig MJ/kg DM 10.8 *

MEn growing pig MJ/kg DM 10.3 1

References

Kawas et al., 1995; López et al., 2001 Last updated on 24/10/2012 00:45:43

Butterfly pea (Clitoria ternatea), seeds

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Dry matter % as fed 95.8 95.3 96.2 2

Crude protein % DM 42.5 2.7 39.4 44.4 3

Ether extract % DM 10.0 9.8 10.1 2

Ash % DM 7.2 5.0 9.3 2

Minerals Unit Avg SD Min Max Nb

Calcium g/kg DM 0.7 0.7 0.7 2 Phosphorus g/kg DM 5.7 5.5 5.8 2 Potassium g/kg DM 12.3 12.0 12.5 2 Sodium g/kg DM 0.1 0.1 0.1 2 Magnesium g/kg DM 2.4 2.4 2.4 2 Manganese mg/kg DM 60 57 63 2 Zinc mg/kg DM 58 54 62 2 Copper mg/kg DM 17 16 17 2 Iron mg/kg DM 144 129 158 2

Amino acids Unit Avg SD Min Max Nb

Arginine % protein 7.4 1 Cystine % protein 2.5 1 Glycine % protein 4.1 1 Histidine % protein 2.4 1 Isoleucine % protein 4.2 1 Leucine % protein 7.4 1 Lysine % protein 6.1 1 Methionine % protein 1.0 1 Phenylalanine % protein 3.6 1 Threonine % protein 2.2 1 Tryptophan % protein 1.2 1 Tyrosine % protein 3.3 1 Valine % protein 4.4 1

References

Odeyinka et al., 2004; Schlink et al., 1993; Van Etten et al., 1961 Last updated on 24/10/2012 00:44:26

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References

Arcos, A. R., 1987. Holstein-Frisiean dairy cows fed with clitoria hay (Clitoria ternatea L.) in Cocula, Guerrero. Tesis licenciatura, Cocula, Guerrero: Colegio Superior Agropecuario del Estado de Guerrero; 1987

Arias, C. E., 1999. Utilization of the hay of Clitoria ternatea L. in the feeding of dual purpose milking calves. Tesis licienciatura. Compostela. Nayarit: Facultad de Medicina Veterinaria y Zootecnica

Barro, C. ; Ribeiro, A., 1983. The study of Clitoria ternatea L. hay as a forage alternative in tropical countries. Evolution of the chemical composition at four different growth stages. J. Sci. Food Agric., 34 (8): 780-782

Barros, N. N. ; Freire, L. C. L. ; Lopes, E. A. ; Johnson, W. L., 1991. Comparative study of digestibility of forage legume with sheep and goats. 1: in vivo digestibility of cunha hay. Pesq. Agropec. Bras., 26 (8): 1209-1213

Barros, N. N. ; Rossetti, A. G. ; Carvalho, R. B. de, 2004. Cunha hay (Clitoria ternatea) for finishing lambs. Ciencia Rural, 34 (2): 499-504

Bogdan, A. V., 1977. Tropical pasture and fodder plants. Longman, 475 pp.

Bowen, M. K. ; Poppi, D. P. ; McLennan, S. R., 2008. Ruminal protein degradability of a range of tropical pastures. Aust. J. Exp. Agric., 48 (6-7): 806-810

Bravo, F.O., 1971. Effect of supplementation of diets based on raw and autoclaved seeds of Clitoria ternata L. with methionine and phenylalanine on growing rats. Técnica Pecuaria en México, 17: 7-12

Bravo, F.O., 1971. Studies on the chemical composition of the seed of Clitoria ternatea Linn.. Técnica Pecuaria en México, 18: 100-102

Bulo, D. ; Blair, G. J. ; Stur, W. ; Till, A. R., 1994. Yield and digestibility of forages in East Indonesia. I. Legumes. Asian-Aust. J. Anim. Sci., 7 (3): 325-333

Bustamante Guerrero, J. de J. ; Villanueva Avalos, J. F. ; Bonilla Cardenas, J. A. ; Rubio Ceja, J. V. ; de J. Bustamante Guerrero, J., 2002. Use of clitoria (Clitoria ternatea L.) hay in the feeding of lactating Brown Swiss cows. Tecnica Pecuaria en Mexico, 42 (3): 477-487

Cardenas, S. J. A. ; Villanueva, A. J. F. ; Rubio, C. J. V., 1999. Utilization of non-conventional feed resources in the development of wool sheep in the dry tropics. Resumen de la XXXVI Reunión Nacional de Investigación Pecuaria Sonora y Memorias del congreso de Investigación científica y tecnológica Nayarit: 75-76

Carneiro, H. ; Kawas, J. R. ; Barros, N. N. ; Araújo Filho, J. A. de; Santos, J. W. dos; Shelton, M. ; Johnson, W. L. ; Freire, L. C. L., 1985. Effect of ensiling on the chemical composition of forage sorghum (Sorghum vulgare) and cunhã (Clitoria ternatea). In: Reunião Anual da Sociedade Brasileira de Zootecnia, 22., 1985, Balneário Camboriú, Sc. Anais Balneário Camboriú: Sociedade Brasileira De Zootecnia, 1985. p. 249

Chakravarty, A. K., 1970. Forage production from arid deserts. Indian Farming, 20: 15-17

Conway, M. J. ; McCosker, K. ; Osten, V. ; Coaker, S. ; Pengelly, B. C. ; , 2001. Butterfly Pea: A legume success story in cropping lands of Central Queensland. Aust. Agron. Conference 2001, Adoption, Extension and Education: 10

Cook, B. G.; Pengelly, B. C.; Brown, S. D.; Donnelly, J. L.; Eagles, D. A.; Franco, M. A. ; Hanson, J.; Mullen, B. F.; Partridge, I. J.; Peters, M.; Schultze-Kraft, R., 2005. Tropical forages. CSIRO, DPI&F(Qld), CIAT and ILRI, Brisbane, Australia

Cordoba, A. ; Ramos, A., 1993. Efecto del intervalo de pastoreo y de la carga animal sobre la persistencia de la asociacion Pangola Digitaria decumbens/Clitoria ternatea L. bajo riego. Reunion nacional de investigacion pecuaria: 16 Cordova, A. ; Peralta, A. ; Ramos, A., 1987. Seasonal production of the association Digitaria decumbens/Clitoria ternatea under three stocking rates and and two management systems. Pasturas Tropicales, 9 (1): 6

Costa, M. R. G. F. ; Carneiro, M. S. de S. ; Pereira, E. S. ; Magalhaes, J. A. ; Costa, N. de L. ; Morais Neto, L. B. de; Mochel Filho, W. de J. E. ; Bezerra, A. P. A. ; de J. E. Mochel Filho, W. ; de Morais Neto, L. B., 2011. Use of the native forage hay of Brazilian's northeast in the feeding of sheep and goats. Pubvet, 5 (7)

Dwivedi G. K. ; Kumar, D., 1999. Nitrogen economy, dry matter production and seed production potential of Setaria

sphacelata by intercropping of pasture legumes. J. Agron. Crop Sci., 182: 121-125

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